JP2003032911A - Battery charger - Google Patents
Battery chargerInfo
- Publication number
- JP2003032911A JP2003032911A JP2001212972A JP2001212972A JP2003032911A JP 2003032911 A JP2003032911 A JP 2003032911A JP 2001212972 A JP2001212972 A JP 2001212972A JP 2001212972 A JP2001212972 A JP 2001212972A JP 2003032911 A JP2003032911 A JP 2003032911A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- battery temperature
- temperature
- charging
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明はニッケル・カドミウ
ム電池（以下ニカド電池という）やニッケル・水素電池
（以下ニッケル水素電池という）等の２次電池を充電す
る充電装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device for charging a secondary battery such as a nickel-cadmium battery (hereinafter referred to as a nicad battery) or a nickel-hydrogen battery (hereinafter referred to as a nickel-hydrogen battery).
【０００２】[0002]
【従来の技術】電動工具等の電源に用いられているニッ
ケルカドミニウム電池やニッケル水素電池等を充電する
方法の１つとして、特開平１１−３５５９７１号に開示
の如く、充電時の電池温度及び温度上昇値が高い（低
い）時は小さい（大きい）充電電流で充電できるように
し、電池温度の上昇を抑え且つ急速に充電し得る充電電
流の許容値を、電池温度値と、電池の温度上昇値に基づ
きマッピングしたマップを、例えば周囲温度と電池温度
の差の温度差に対応して複数記憶し、検出及び演算した
電池温度及び電池温度上昇値に基き選択したマップ内か
ら一定周期毎に充電電流許容値を検索し、この検索した
充電電流により充電すると共に前記電池温度と電池温度
上昇値とがマップ中における温度上昇値が大きい領域及
び電池温度が高く温度上昇値が中程度の領域である充電
末期領域に属する頻度が高いか否かに基づき満充電を判
断する充電装置が提案されている。2. Description of the Related Art As one of the methods for charging a nickel cadmium battery or a nickel hydride battery used as a power source for an electric tool or the like, as disclosed in Japanese Patent Laid-Open No. 11-355971, the battery temperature and temperature during charging are set. When the rise value is high (low), it can be charged with a small (large) charge current, and the allowable value of the charge current that suppresses the rise in battery temperature and can be charged rapidly is the battery temperature value and the battery temperature rise value. Based on the detected and calculated battery temperature and battery temperature rise value, the charging current is stored in a fixed cycle at a fixed cycle, for example, by storing a plurality of maps mapped according to the temperature difference of the difference between the ambient temperature and the battery temperature. The allowable value is searched for, and the battery is charged by the searched charging current, and the battery temperature and the battery temperature increase value are in a region where the temperature increase value is large in the map and the battery temperature is high. Charging apparatus frequently rise value belongs to the final stage of charging region is a moderate area determines the full charge based on whether high or not have been proposed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、かかる
充電装置においては、周囲温度が電池温度に対して高い
場合、充電開始直後から電池温度と周囲温度との温度勾
配によって温度上昇値が高くなり、このような現象を想
定していないマップにおいては充電末期を示す領域にお
いて頻繁に充電を行ってしまい、ほとんど充電されるこ
となく満充電と判断されて、充電不足を生じる。また周
囲温度を検出するためには電池温度を検出するセンサ以
外のセンサが新たに必要となり、構成が複雑になるとい
う問題がある。However, in such a charging device, when the ambient temperature is higher than the battery temperature, the temperature rise value becomes high immediately after the start of charging due to the temperature gradient between the battery temperature and the ambient temperature. In a map that does not assume such a phenomenon, the battery is frequently charged in the region indicating the end of charge, and it is determined that the battery is fully charged with almost no charge, resulting in insufficient charging. Moreover, in order to detect the ambient temperature, a sensor other than the sensor for detecting the battery temperature is newly required, which causes a problem that the configuration becomes complicated.
【０００４】本発明の目的は、上記した従来技術の欠点
をなくし、周囲温度が電池温度に対して相対的に所定値
以上高い場合においても、充電早切れによる充電不足を
起こすことなく充電できるようにすると共に満充電を確
実に判別できるようにすることである。The object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to enable charging without causing insufficient charging due to premature charge even when the ambient temperature is higher than the battery temperature by a predetermined value or more. It is also necessary to ensure that the full charge can be determined.
【０００５】[0005]
【課題を解決するための手段】上記目的は、冷却ファン
を充電前に所定時間作動させて冷却前後の電池温度の差
を求め、この差に対応して前記マップを選択し、選択し
たマップ内の充電電流の許容値を検索し検索した許容値
により充電することにより達成される。The above object is to operate the cooling fan for a predetermined time before charging to obtain the difference in battery temperature before and after cooling, select the map corresponding to this difference, and select the map within the selected map. This is achieved by searching the allowable value of the charging current of and charging with the searched allowable value.
【０００６】[0006]
【発明の実施の形態】図１は本発明の一実施形態を示す
回路図である。１は交流電源、２は複数の素電池を直列
接続した電池組であって、素電池に接触または近接して
電池温度を検出する例えばサーミスタ等からなる電池温
度検出手段装備されている。３は電池組２に流れる充電
電流を検出する電流検出手段、４は充電の開始及び停止
を制御する信号を伝達する充電制御信号伝達手段、５は
充電電流の信号をＰＷＭ制御ＩＣ２３に帰還する充電電
流信号伝達手段である。充電制御伝達信号手段４及び充
電電流信号伝達手段５はホトカプラ等からなる。６は電
池組２を冷却する冷却ファン、７は冷却ファン６を駆動
する駆動手段であり、トランジスタ７ａ、抵抗７ｂ、７
ｃから構成され、マイコン５０の出力ポート５６ｂの出
力に応じて冷却ファン６の駆動を制御する。１０は全波
整流回路１１と平滑用コンデンサ１２からなる整流平滑
回路、２０は高周波トランス２１、ＭＯＳＦＥＴ２２と
ＰＷＭ制御ＩＣ２３からなるスイッチング回路である。
ＰＷＭ制御ＩＣ２３はＭＯＳＦＥＴ２２の駆動パルス幅
を変えて整流平滑回路２０の出力電圧を調整するスイッ
チング電源ＩＣである。３０はダイオード３１、３２、
チョークコイル３３、平滑用コンデンサ３４からなる整
流平滑回路、４０は抵抗４１、４２からなる電池電圧検
出手段で、電池組２の端子電圧を分圧する。５０は演算
手段（ＣＰＵ）５１、ＲＯＭ５２、ＲＡＭ５３、タイマ
５４、Ａ／Ｄコンバータ５５、出力ポート５６ａ、５６
ｂ、リセット入力ポート５７からなるマイコンである。
６０は演算増幅器６１、６２、抵抗６３〜６６からなる
充電電流制御手段、７０は電源トランス７１、全波整流
回路７２、３端子レギュレータ７３、７４、平滑コンデ
ンサ７５〜７７、リセットＩＣ７８からなる定電圧電源
で、冷却ファン６、マイコン５０、充電電流制御手段６
０等の電源となる。リセットＩＣ７８はマイコン５０を
初期状態にするためにリセット入力ポート５７にリセッ
ト信号を出力する。８０は充電電流を設定する充電電流
設定手段であって、前記出力ポート５６aからの信号に
対応して演算増幅器６２の反転入力端に印加する電圧値
を変えるものである。1 is a circuit diagram showing an embodiment of the present invention. Reference numeral 1 is an AC power supply, and 2 is a battery group in which a plurality of unit cells are connected in series, and is equipped with a battery temperature detecting means such as a thermistor that detects the battery temperature in contact with or close to the unit cells. 3 is a current detecting means for detecting a charging current flowing in the battery set 2, 4 is a charging control signal transmitting means for transmitting a signal for controlling the start and stop of charging, and 5 is a charging for feeding back the signal of the charging current to the PWM control IC 23. It is a current signal transmission means. The charging control transmission signal means 4 and the charging current signal transmission means 5 are photocouplers or the like. Reference numeral 6 is a cooling fan for cooling the battery set 2, and 7 is a driving means for driving the cooling fan 6, which includes a transistor 7a and resistors 7b, 7b.
c, and controls the drive of the cooling fan 6 according to the output of the output port 56b of the microcomputer 50. Reference numeral 10 is a rectifying / smoothing circuit including a full wave rectifying circuit 11 and a smoothing capacitor 12, and 20 is a switching circuit including a high frequency transformer 21, a MOSFET 22 and a PWM control IC 23.
The PWM control IC 23 is a switching power supply IC that changes the drive pulse width of the MOSFET 22 to adjust the output voltage of the rectifying and smoothing circuit 20. 30 is a diode 31, 32,
A rectifying / smoothing circuit including a choke coil 33 and a smoothing capacitor 34, and a battery voltage detecting unit 40 including resistors 41 and 42, which divides the terminal voltage of the battery set 2. Reference numeral 50 denotes an arithmetic means (CPU) 51, a ROM 52, a RAM 53, a timer 54, an A / D converter 55, output ports 56a and 56.
b, a reset input port 57.
Reference numeral 60 is a charging current control means composed of operational amplifiers 61 and 62 and resistors 63 to 66, and 70 is a constant voltage composed of a power transformer 71, a full-wave rectifier circuit 72, three-terminal regulators 73 and 74, smoothing capacitors 75 to 77, and a reset IC 78. Power supply, cooling fan 6, microcomputer 50, charging current control means 6
It becomes a power source such as 0. The reset IC 78 outputs a reset signal to the reset input port 57 in order to initialize the microcomputer 50. Reference numeral 80 is a charging current setting means for setting a charging current, which changes the voltage value applied to the inverting input terminal of the operational amplifier 62 in response to the signal from the output port 56a.
【０００７】図２は周囲温度と電池温度との差が小さい
時に選択されるマップの一例で、電池温度Ｔ及び電池温
度上昇値ΔＴに応じて検索される充電電流の許容値Ｉ１
１〜Ｉ６６を示し、また斜線部は充電末期に検索される
領域を示す。すなわち電池温度上昇値ΔＴが大きい領域
（Ｉ５１〜Ｉ６６）や電池温度Ｔが高く電池温度上昇値
ΔＴが中程度の領域（Ｉ４５、Ｉ４６）が充電末期に検
索される領域である。FIG. 2 shows an example of a map selected when the difference between the ambient temperature and the battery temperature is small. The allowable value I1 of the charging current searched according to the battery temperature T and the battery temperature increase value ΔT.
1 to I66, and the shaded area indicates the area searched at the end of charging. That is, a region where the battery temperature rise value ΔT is large (I51 to I66) and a region where the battery temperature T is high and the battery temperature rise value ΔT is medium (I45, I46) are regions searched at the end of charging.
【０００８】図３は周囲温度と電池温度との差が大きい
時に選択されるマップの一例で、電池温度上昇値ΔＴが
大きくなる傾向があるので、マップ左下側の領域（すな
わちＩ４１、Ｉ４２、Ｉ５１、Ｉ５２、Ｉ６１、Ｉ６
２）の縦幅を狭めこの領域の分解能を上げている。斜線
部は図２同様充電末期に検索される領域を示す。FIG. 3 is an example of a map selected when the difference between the ambient temperature and the battery temperature is large. Since the battery temperature increase value ΔT tends to be large, the lower left region of the map (that is, I41, I42, I51). , I52, I61, I6
The vertical width of 2) is narrowed to increase the resolution in this area. The shaded area indicates the area searched at the end of charging as in FIG.
【０００９】次に図１の回路図、図２、図３及び図４の
フローチャートを参照して本発明充電装置の動作を説明
する。Next, the operation of the charging apparatus of the present invention will be described with reference to the circuit diagram of FIG. 1 and the flow charts of FIGS. 2, 3 and 4.
【００１０】電源を投入するとマイコン５０は出力ポー
ト５６a、５６ｂをイニシャルセットし、電池組２の接
続待機状態となる（ステップ１０１）。電池組２が接続
されると、冷却ファン６が作動する前の電池温度Ｔ1を
電池温度検出手段２Ａの出力からＡ/Ｄコンバータ５５
を介して検出し（ステップ１０２）、その後冷却ファン
６を作動させ（ステップ１０３）、タイマスタートする
（ステップ１０４）。冷却ファン６作動後、所定時間が
経過した否かをチェックし（ステップ１０５）、所定時
間が経過した場合は、その時点での電池温度Ｔ2を電池
温度検出手段２Ａの出力からＡ/Ｄコンバータ５５を介
して検出し（ステップ１０６）、所定時間が経過した時
点での電池温度Ｔ2と、冷却ファン６が作動する前の電
池温度Ｔ1とを比較演算し（ステップ１０７）、その演
算値が判別値より小さい時は、周囲温度と電池温度との
差が小さいと判断して、マイコン５０は図２のマップを
選択し（ステップ１０８）、前記比較演算値が判別値よ
り大きい時は、周囲温度と電池温度との差が大きいと判
断、マイコン５０は、図３の第２のマップを選択し（ス
テップ１０９）、周囲温度が電池温度に対して相対的に
高い場合において、充電初期に電池の温度が急激に上昇
することにより満充電であると判断することに起因する
早切れを起こすことなく、充電を行うことができる。When the power is turned on, the microcomputer 50 initially sets the output ports 56a and 56b, and enters a connection standby state for the battery group 2 (step 101). When the battery set 2 is connected, the battery temperature T 1 before the cooling fan 6 is operated is calculated from the output of the battery temperature detecting means 2A by the A / D converter 55.
(Step 102), then the cooling fan 6 is operated (Step 103), and the timer is started (Step 104). After the operation of the cooling fan 6, it is checked whether or not a predetermined time has passed (step 105). If the predetermined time has passed, the battery temperature T 2 at that time is calculated from the output of the battery temperature detecting means 2A by the A / D converter. It is detected via 55 (step 106), and the battery temperature T 2 at the time when a predetermined time has elapsed is compared with the battery temperature T 1 before the cooling fan 6 is operated (step 107). Is smaller than the discriminant value, it is determined that the difference between the ambient temperature and the battery temperature is small, and the microcomputer 50 selects the map of FIG. 2 (step 108). When the comparison calculation value is larger than the discriminant value, When it is determined that the difference between the ambient temperature and the battery temperature is large, the microcomputer 50 selects the second map in FIG. 3 (step 109), and when the ambient temperature is relatively high with respect to the battery temperature, the initial charging is performed. Battery temperature Charging can be performed without causing premature disconnection due to the determination that the battery is fully charged due to the rapid rise.
【００１１】マップ選択後充電を開始し（ステップ１１
０）、充電中の電池温度Ｔを所定周期毎に電池温度検出
手段２Ａの出力から検出すると共に（ステップ１１
１）、温度上昇値ΔＴを求め（ステップ１１２）、この
電池温度値Ｔ及び温度上昇値ΔＴに基づきマイコン５０
はマップを検索して温度上昇を抑えながら充電し得る充
電電流の許容電流値を求める。After the map is selected, charging is started (step 11
0), the battery temperature T during charging is detected from the output of the battery temperature detecting means 2A every predetermined cycle (step 11).
1), the temperature rise value ΔT is obtained (step 112), and the microcomputer 50 based on the battery temperature value T and the temperature rise value ΔT.
Searches the map to find the allowable current value of the charging current that can be charged while suppressing the temperature rise.
【００１２】次にマイコン５０は、検索した許容値が図
２または図３の選択したマップ中で斜線部で示す充電末
期領域に入ったか否かを判断する（ステップ１１４）。
充電末期領域に入らない時はステップ１１５に進みステ
ップ１１３で求めた許容値での充電を継続し、ステップ
１１１に戻る。充電末期領域に入った時は、充電末期領
域に入る確率が高いか否かを判断する（ステップ１１
６）。例えば、３周期連続して、充電末期領域に入った
場合は、充電末期領域に入る確率が高いと判断する。充
電末期領域に入っても、３周期連続充電末期領域に入ら
なかった場合は、充電末期領域に入る確率が高いと判断
されず、ステップ１１５を介してステップ１１１に戻
る。３周期連続充電末期領域に入った場合は、充電末期
領域に入る確率が高いと判断され、充電を完了する（ス
テップ１１７）。Next, the microcomputer 50 determines whether or not the retrieved allowable value has entered the end-of-charge region indicated by the shaded area in the selected map of FIG. 2 or 3 (step 114).
When it does not enter the end-of-charge region, the routine proceeds to step 115, where the charging with the allowable value obtained at step 113 is continued, and the routine returns to step 111. When it enters the end-of-charge region, it is determined whether the probability of entering the end-of-charge region is high (step 11).
6). For example, if the battery enters the end of charge region for three consecutive cycles, it is determined that the probability of entering the end of charge region is high. If the terminal does not enter the end-of-charge region even after entering the end-of-charge region, the probability of entering the end-of-charge region is not determined to be high, and the process returns to step 111 via step 115. If it enters the three-cycle continuous charging end period region, it is determined that the probability of entering the charging end period region is high, and the charging is completed (step 117).
【００１３】以上のように上記実施形態においては、充
電を開始する前に冷却ファン６を所定時間作動させ、周
囲温度に対応する温度の風を電池組２に当てるので、前
記電池温度Ｔ2は周囲温度に近くなり周囲温度に対応す
る温度となる。従って電池組２内の電池温度検出手段２
Ａのみで電池温度及び周囲温度を検出できるようにな
り、周囲温度検出用の新たな温度検出手段を追加する必
要がなくなり、構成が簡単になる。As described above, in the above embodiment, the cooling fan 6 is operated for a predetermined time before the charging is started, and the air having a temperature corresponding to the ambient temperature is applied to the battery set 2. Therefore, the battery temperature T 2 is The temperature is close to the ambient temperature and corresponds to the ambient temperature. Therefore, the battery temperature detecting means 2 in the battery set 2
Since the battery temperature and the ambient temperature can be detected only by A, it is not necessary to add a new temperature detecting means for detecting the ambient temperature, and the configuration is simplified.
【００１４】上記実施形態のステップ１０９において周
囲温度が電池温度より高いと判断した時に図３のマップ
を選択するとしたがこれに限るものではなく、例えば図
５に示すようなマップ中で斜線部で示す温度上昇値ΔＴ
が大きい領域及び電池温度Ｔが高く温度上昇値ΔＴが中
程度の領域である充電末期領域を狭めたマップでも構わ
ない。The map of FIG. 3 is selected when it is determined that the ambient temperature is higher than the battery temperature in step 109 of the above-described embodiment, but the map is not limited to this. For example, a hatched portion in the map shown in FIG. Temperature rise value ΔT
It is also possible to use a map in which the end-of-charge region, which is a region where the battery temperature T is high and the battery temperature T is high and the temperature rise value ΔT is medium, is narrowed.
【００１５】[0015]
【発明の効果】以上のように本発明によれば、周囲温度
が電池温度に対して高い場合、充電開始直後から電池温
度と周囲温度との温度勾配によって温度上昇値が高くな
り、その結果これを起因とする充電早切れによる充電不
足をなくし、確実な満充電判別が可能となる。As described above, according to the present invention, when the ambient temperature is higher than the battery temperature, the temperature rise value becomes high immediately after the start of charging due to the temperature gradient between the battery temperature and the ambient temperature. It is possible to eliminate the shortage of charge due to premature charge cutoff due to, and to reliably determine full charge.
【図１】本発明充電装置の一実施形態を示す回路図。FIG. 1 is a circuit diagram showing an embodiment of a charging device of the present invention.
【図２】周囲温度と電池温度との差が小さい時に選択さ
れるマップの一例の内容を示す説明図。FIG. 2 is an explanatory diagram showing the contents of an example of a map selected when the difference between the ambient temperature and the battery temperature is small.
【図３】周囲温度と電池温度との差が大きい時に選択さ
れるマップの一例の内容を示す説明図。FIG. 3 is an explanatory diagram showing the contents of an example of a map selected when the difference between the ambient temperature and the battery temperature is large.
【図４】本発明充電装置の動作説明用フローチャート。FIG. 4 is a flowchart for explaining the operation of the charging device of the present invention.
【図５】周囲温度と電池温度との差が大きい時に選択さ
れるマップの他の例の内容を示す説明図。FIG. 5 is an explanatory diagram showing the contents of another example of the map selected when the difference between the ambient temperature and the battery temperature is large.
２は電池組、２Ａは電池温度検出手段、６は冷却ファ
ン、５０はマイコンである。2 is a battery group, 2A is a battery temperature detecting means, 6 is a cooling fan, and 50 is a microcomputer.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5G003 AA01 BA01 CA03 CA20 CC02 GB04 GC05 5H030 AA03 AS18 BB14 FF22 FF27 FF52 5H031 AA02 AA03 KK01 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 5G003 AA01 BA01 CA03 CA20 CC02 GB04 GC05 5H030 AA03 AS18 BB14 FF22 FF27 FF52 5H031 AA02 AA03 KK01
Claims (2)
る充電電流の許容値を、電池温度及び電池温度の上昇値
とに基づきマッピングしたマップを周囲温度と電池温度
の差の温度差に対応して複数記憶する記憶手段と、電池
温度を検出する電池温度検出手段と、電池温度検出手段
の出力に基づき所定周期ごとの電池温度の上昇値を演算
する電池温度上昇値検出手段と、電池を冷却する冷却フ
ァンと、充電前に冷却ファンを所定時間作動させて冷却
前後の電池温度の差を求め、この差に対応して前記マッ
プを選択する制御手段とを備え、選択したマップ内の充
電電流の許容値を前記電池温度及び電池温度上昇値に応
じて検索し、この検索した許容値により充電するように
したことを特徴とする充電装置。1. A map in which an allowable value of a charging current that can be charged while suppressing a temperature rise value of a battery is mapped based on a battery temperature and an increase value of the battery temperature corresponds to a temperature difference of a difference between an ambient temperature and a battery temperature. And a plurality of storage means, a battery temperature detection means for detecting the battery temperature, a battery temperature increase value detection means for calculating an increase value of the battery temperature for each predetermined cycle based on the output of the battery temperature detection means, and a battery. A cooling fan for cooling and a control means for operating the cooling fan for a predetermined time before charging to obtain a difference in battery temperature before and after cooling and selecting the map corresponding to this difference, charging in the selected map A charging device characterized in that a permissible value of electric current is searched according to the battery temperature and a battery temperature rise value, and charging is performed according to the searched permissible value.
る充電電流の許容値を、電池温度及び電池温度の上昇値
とに基づきマッピングしたマップを周囲温度と電池温度
の差の温度差に対応して複数記憶する記憶手段と、電池
温度を検出する電池温度検出手段と、電池温度検出手段
の出力に基づき所定周期ごとの電池温度の上昇値を演算
する電池温度上昇値検出手段と、前記電池温度検出手段
により検出された電池温度と電池温度上昇検出手段によ
り検出された電池温度上昇値とが、前記マップ中におけ
る充電末期を示す領域に属する頻度が高いか否かに基き
充電完了を判断する充電完了判断手段と、電池を冷却す
る冷却ファンと、充電前に冷却ファンを所定時間作動さ
せて冷却前後の電池温度の差を求め、この差に対応して
前記マップを選択する制御手段とを備え、選択したマッ
プ内の充電電流の許容値を前記電池温度及び電池温度上
昇値に応じて検索し、この検索した許容値により充電す
ると共に前記充電完了判断手段により充電完了を判断す
るようにしたことを特徴とする充電装置。2. A map obtained by mapping the allowable value of the charging current that can be charged while suppressing the temperature rise value of the battery based on the battery temperature and the rise value of the battery temperature corresponds to the temperature difference of the difference between the ambient temperature and the battery temperature. A plurality of storage means, a battery temperature detection means for detecting the battery temperature, a battery temperature increase value detection means for calculating an increase value of the battery temperature for each predetermined cycle based on the output of the battery temperature detection means, and the battery. Whether or not the battery temperature detected by the temperature detection means and the battery temperature increase value detected by the battery temperature increase detection means frequently belong to the region indicating the end of charge in the map is judged to be complete. The charging completion determining means, the cooling fan for cooling the battery, and the cooling fan are operated for a predetermined time before charging to obtain the difference between the battery temperatures before and after cooling, and the map is selected according to this difference. A control means for searching for an allowable value of the charging current in the selected map according to the battery temperature and a battery temperature increase value, and charging is performed by the searched allowable value and completion of charging by the charging completion determining means. A charging device characterized by making a judgment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001212972A JP3945194B2 (en) | 2001-07-13 | 2001-07-13 | Charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001212972A JP3945194B2 (en) | 2001-07-13 | 2001-07-13 | Charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003032911A true JP2003032911A (en) | 2003-01-31 |
| JP3945194B2 JP3945194B2 (en) | 2007-07-18 |
Family
ID=19048031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001212972A Expired - Fee Related JP3945194B2 (en) | 2001-07-13 | 2001-07-13 | Charger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3945194B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008027888A (en) * | 2006-06-22 | 2008-02-07 | Panasonic Ev Energy Co Ltd | Battery cooling device, cooling air volume control device, and program |
| CN104142446A (en) * | 2014-07-24 | 2014-11-12 | 国家电网公司 | System and method for testing charging control response time of electric vehicle charger |
-
2001
- 2001-07-13 JP JP2001212972A patent/JP3945194B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008027888A (en) * | 2006-06-22 | 2008-02-07 | Panasonic Ev Energy Co Ltd | Battery cooling device, cooling air volume control device, and program |
| CN104142446A (en) * | 2014-07-24 | 2014-11-12 | 国家电网公司 | System and method for testing charging control response time of electric vehicle charger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3945194B2 (en) | 2007-07-18 |
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